Target Volume Determination 2015

MRI • T-Staging: Detection – T1 – not palpable

Where is the tumour?

T2w MRI

Histology

difficult – T 2 – confined to prostate easily detectable – T 3/4 – extracapsular extension: infiltration of neurovascular bundle, seminal vesicles, rectum, bladder superior to CT • Grading: Characterization not possible (yet?)

Reality

Lymph node drainage

Differential Diagnosis

Extracapsular Extension

Yellow : Lateral route -> External iliac LN

Green : Hypogastric route -> Internal iliac LN

Chronic Prostatitis: Low intensity areas decreased after 3 months of antibiotics

Wang L, Radiology 2004